diff options
| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-09-26 22:51:27 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-11-19 17:23:42 +0100 |
| commit | e08d8f0fadad540ecd134724a7d6b519823e4637 (patch) | |
| tree | 341b175411fe7ef1b73eda2af5cbc65af280bb30 /drivers/media/usb | |
| parent | media: dib0700: fix undefined behavior in tuner shutdown (diff) | |
| download | linux-e08d8f0fadad540ecd134724a7d6b519823e4637.tar.xz linux-e08d8f0fadad540ecd134724a7d6b519823e4637.zip | |
media: dib0700: cleanup start/stop streaming logic
Having two different paths to start/stop streaming, depending
weather the USB endpoints are 0x82/0x83 or not makes it more
prune to errors.
Unify the logic.
Link: https://lore.kernel.org/linux-media/065a6fff925a42153671fa5202c81882ca12c59c.1632689033.git.mchehab+huawei@kernel.org
Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Mauro Carvalho Chehab <mchehab+huawei@kernel.org>, Mauro Carvalho Chehab <mchehab@kernel.org>, Michael Kuron <michael.kuron@gmail.com>, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, pb@linuxtv.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/dvb-usb/dib0700_core.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c index 7ea8f68b0f45..d7c5836b9271 100644 --- a/drivers/media/usb/dvb-usb/dib0700_core.c +++ b/drivers/media/usb/dvb-usb/dib0700_core.c @@ -583,7 +583,7 @@ out: int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) { struct dib0700_state *st = adap->dev->priv; - int ret; + int ret, adapt_nr; if ((onoff != 0) && (st->fw_version >= 0x10201)) { /* for firmware later than 1.20.1, @@ -610,24 +610,26 @@ int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff) st->buf[3] = 0x00; - deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id); - st->channel_state &= ~0x3; + if ((adap->fe_adap[0].stream.props.endpoint != 2) - && (adap->fe_adap[0].stream.props.endpoint != 3)) { - deb_info("the endpoint number (%i) is not correct, use the adapter id instead", adap->fe_adap[0].stream.props.endpoint); - if (onoff) - st->channel_state |= 1 << (adap->id); + && (adap->fe_adap[0].stream.props.endpoint != 3)) { + deb_info("the endpoint number (%i) is not correct, use the adapter id instead\n", + adap->fe_adap[0].stream.props.endpoint); + adapt_nr = adap->id; } else { - if (onoff) - st->channel_state |= 1 << (adap->fe_adap[0].stream.props.endpoint-2); - else - st->channel_state |= 1 << (3-adap->fe_adap[0].stream.props.endpoint); + adapt_nr = adap->fe_adap[0].stream.props.endpoint - 2; } + if (onoff) + st->channel_state |= 1 << adapt_nr; + else + st->channel_state |= 1 << (1 - adapt_nr); + st->buf[2] |= st->channel_state; - deb_info("data for streaming: %x %x\n", st->buf[1], st->buf[2]); + deb_info("adapter %d, streaming %s: %*ph\n", + adapt_nr, onoff ? "ON" : "OFF", 3, st->buf); ret = dib0700_ctrl_wr(adap->dev, st->buf, 4); mutex_unlock(&adap->dev->usb_mutex); |